Crawl Space Moisture Control - Porous Foundation Walls

The foundation walls of the crawl space are made with porous cinderblocks, which means that air and moisture can pass through them. Efflorescence was visible along the foundation walls, which suggests that moisture seep through the walls, bringing along the inner salts and sediments to the surface, creating a chalky, powdery substance. Open vents lining these walls were also allowing outside air and moisture to freely enter and affect the relative humidity and environment.